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ACIDITY
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I. (noun)
Sense 1
Meaning:
The property of being acidic
Synonyms:
Classified under:
Nouns denoting attributes of people and objects
Hypernyms ("acidity" is a kind of...):
taste property (a property appreciated via the sense of taste)
Hyponyms (each of the following is a kind of "acidity"):
acerbity; tartness (a sharp sour taste)
vinegariness; vinegarishness (a sourness resembling that of vinegar)
Derivation:
acid (having the characteristics of an acid)
Sense 2
Meaning:
PH values below 7
Classified under:
Nouns denoting attributes of people and objects
Hypernyms ("acidity" is a kind of...):
pH; pH scale ((from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic))
Hyponyms (each of the following is a kind of "acidity"):
hyperacidity (excessive acidity)
Antonym:
alkalinity (pH values above 7)
Sense 3
Meaning:
The taste experience when something acidic is taken into the mouth
Synonyms:
acidity; acidulousness
Classified under:
Nouns denoting cognitive processes and contents
Hypernyms ("acidity" is a kind of...):
sour; sourness; tartness (the taste experience when vinegar or lemon juice is taken into the mouth)
Context examples:
The negative logarithm (base 10) of the concentration of hydronium ions, which is used as a measure of the acidity or alkalinity of a fluid.
(pH, NCI Thesaurus/CDISC)
Usually the alkalinizing agent(s) acts as a proton acceptor, neutralizing the acidity of a biologic environment (skin, gastric content, urine, etc.) and raising the pH.
(Alkalinizing Agent Preparation, NCI Thesaurus)
Nizatidine inhibits the histamine H2-receptors located on the basolateral membrane of the gastric parietal cell, thereby reducing basal and nocturnal gastric acid secretion, resulting in a reduction in gastric volume, acidity, and amount of gastric acid released in response to stimuli.
(Nizatidine, NCI Thesaurus)
Once inside the cell and due to the slightly alkaline pH inside the tumor cell, cis-UCA is deprotonated, i.e. the imidazolyl proton is released into the cytosol which eventually raises the intracellular acidity.
(cis-Urocanic Acid, NCI Thesaurus)
As a competitive inhibitor of histamine H2-receptors located on the basolateral membrane of the parietal cell, famotidine reduces basal and nocturnal gastric acid secretion, resulting in a reduction in gastric volume, acidity, and amount of gastric acid released in response to various stimuli.
(Famotidine, NCI Thesaurus)
Acidity is measured on a scale called the pH scale.
(Acid, NCI Dictionary)
Natural or synthetic compounds or mixtures, Antiacid Preparations such as sodium bicarbonate, sodium citrate, and phosphate salts act as proton acceptors, neutralizing the acidity of a biologic environment (skin, gastric content, urine, etc.) and raising the pH.
(Antacid Preparation, NCI Thesaurus)
